海冰脊是北极微生物生物多样性热点

自然·通讯,2026年3月13日

北极海冰上的粗糙冰脊为微生物群落提供了栖息地,这些栖息地维持着极其多样的微生物群落,而随着温度升高,它们的风险也在增加。这些冰脊在冬季储存冻结的有机物质,在夏季则转变为藻类生产力的热点,其藻类含量可达附近平坦冰面或地表水的八倍。包括融水侵入和夏末内部结冰在内的环境变化,将冰脊中的微生物群落从以自养为主转变为以异养为主,从根本上改变了它们产生和利用能量的方式。这种转变将冰脊生态系统从碳生产者转变为碳消费者;实际上,这会减少初级生产,改变营养循环,并影响高等生物的食物可获得性。这项研究表明,未来几十年,北极海冰的减少将显著改变北冰洋的生态功能和微生物多样性。.

帕姆·皮尔森

最新帖子

Carbon and Nitrogen Release Due to Melting Permafrost in Arctic River Deltas

Nature Communications, 29 May 2026 The soils of Arctic river deltas store large amounts of…

3 周 ago

Himalayan Mountain Infrastructure Increasingly Exposed to Climate Risks

Scientific Reports, 27 May 2026 Rising global temperatures increase the exposure of communities and infrastructure…

3 周 ago

Permafrost Thaw Increases Infrastructure Risks and Economic Inequality in the Qinghai-Tibet Plateau

Global Environmental Change, 20 May 2026 In the Qinghai-Tibet Plateau, reducing greenhouse gas emissions could…

3 周 ago

Warming Near 1.5°C Commits Coastal Louisiana to Substantial Sea-Level Rise

Nature Sustainability, 4 May 2026 Sediment records from the Last Inter-Glacial (LIG) period suggest that…

4 周 ago

Over Four Decades of Winter Arctic Sea Ice Loss Primarily Driven by GHG Emissions

NPJ Climate and Atmospheric Science, 20 May 2026 Human-caused warming has been the primary driver…

4 周 ago

Sudden Meltwater Lake Drainage Speeds Up Greenland Ice Loss

Nature Communications, 27 May 2026 Sudden drainage of meltwater lakes through water-filled fractures can locally…

4 周 ago